What do systematic reviews say?

Iodine supplementation vs control

Iodine supplementation showed no clear difference in low score in any main Bayley domain (< 85) or death compared with control (high certainty).

• Iodine supplementation for the prevention of mortality and adverse neurodevelopmental outcomes in preterm infants 2019 · Cochrane Headline outcomes only
  RR 1.05 [0.94, 1.17]
  1 study · 1259 participants
  High